oj.uz

답안 #654273

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
654273 2022-10-30T19:53:54 Z fabijan_cikac Traffic (CEOI11_tra) C++17
0 / 100
 999 ms 76740 KB 
#include <bits/stdc++.h>

using namespace std;

#define pb push_back
#define pp pair<int, int>
#define F first
#define S second

struct point{
	int x, y, ix;
};

const int N = 3 * 1e5 + 100;

int n, m, A, B; vector<point> pt;
vector<int> g[N], tg[N], graph[N], order;
int new_idx[N], root[N], used[N], l[N], r[N];

bool cmp(point x, point y){
	if (x.x != y.x)
		return (x.x < y.x);
	return (x.y > y.y);
}

void dfs1(int x){
	used[x] = 1;
	for (int y: g[x]){
		if (!used[y]) dfs1(y);
	}
	order.pb(x);
}

int cnt = 0;
void dfs2(int x){
	used[x] = 1;
	for (int y: tg[x]){
		if (!used[y]) dfs2(y);
	}
	root[x] = cnt;
	if (pt[x].x == A){
		l[cnt] = min(l[cnt], x);
		r[cnt] = max(r[cnt], x);
	}
}

void dfs3(int x){
	used[x] = 1;
	for (int y: graph[x]){
		if (!used[y]) dfs3(y);
		l[x] = min(l[x], l[y]);
		r[x] = max(r[x], r[y]);
	}
	//cout << ": " << x << ' ' << l[x] << ' ' << r[x] << endl;
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	
	cin >> n >> m >> A >> B;
	pt.resize(n); int k = 1;
	for (int i = 0; i < n; ++i){
		cin >> pt[i].x >> pt[i].y;
		pt[i].ix = i;
	}
	sort(pt.begin(), pt.end(), cmp);
	for (auto i = 0; i < n; ++i){
		new_idx[pt[i].ix] = i;
		l[i] = N; r[i] = -1;
	}
	for (int i = 0; i < m; ++i){
		int u, v, k; cin >> u >> v >> k;
		--u; --v; u = new_idx[u]; v = new_idx[v];
		g[u].pb(v); tg[v].pb(u);
		if (k == 2){
			g[v].pb(u); tg[u].pb(v);
		}
	}
	while (k < n && pt[k].x == 0) ++k;
	for (int i = 0; i < k; ++i){
		if (!used[i]) dfs1(i);
	}
	memset(used, 0, sizeof(used));
	/*cout << "-----------------------------" << endl;
	for (auto x: pt) cout << x.x << ' ' << x.y << ' ' << x.ix << endl;
	for (int x: order) cout << x << ' ';
	cout << endl;*/
	reverse(order.begin(), order.end());
	for (int x: order){
		if (!used[x]){
			dfs2(x); ++cnt;
		}
	}
	/*for (int i = 0; i < n; ++i)
		cout << root[i] << ' ';
	cout << endl;*/
	for (int i = 0; i < n; ++i){
		for (int x: g[i]) graph[root[i]].pb(root[x]);
	}
	memset(used, 0, sizeof(used));
	for (int i = 0; i < cnt; ++i){
		if (!used[i]) dfs3(i);
	}
	/*for (int i = 0; i < n; ++i)
		cout << l[i] << ' ' << r[i] << endl;*/
	for (int i = 0; i < k; ++i){
		int x = root[i];
		if (l[x] == N)
			cout << 0;
		else cout << (r[x] - l[x] + 1);
		cout << '\n';
	}
	
	
	return 0;
}

Subtask #1
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 22612 KB Output is correct
2 Correct 12 ms 22612 KB Output is correct
3 Correct 12 ms 22632 KB Output is correct
4 Incorrect 12 ms 22612 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 22620 KB Output is correct
2 Incorrect 14 ms 22612 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 13 ms 22616 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 14 ms 22856 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 30 ms 25044 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 64 ms 28116 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 143 ms 33304 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 230 ms 36444 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 288 ms 44440 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 440 ms 57300 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #11
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 999 ms 76740 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #12
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 232 ms 47156 KB Output isn't correct
2 Halted 0 ms 0 KB -